Journal of Energy Storage
·
2026
·
IF 10.7
Tingting Wei,Jiemin Dong,Xu Cheng,Yanhua Zhang,Jiaxin Zhang,Ming Liang,Jianfeng Li,Ting-Feng Yi
The Fe–Cu–Mn based layered oxides have gained considerable attention as particularly promising cathode materials for sodium-ion batteries (SIBs) due to their low cost, earth abundance, and favorable electrochemical properties. However, current research often treats this system as a unified matrix, which obscures the specific contributions of the individual Fe, Cu, and Mn components in determining structural stability and electrochemical performance. Herein, we systematically investigate the ternary Fe–Cu–Mn system without the addition of extraneous elements. By precisely tuning the stoichiometric ratios of Fe, Cu, and Mn within a Mn-rich layered framework, a direct correlation is established between composition, structure, and electrochemical behavior. It reveals that optimizing the Fe/Cu/Mn ratio effectively suppresses undesirable phase transitions, enhances structural stability, and results in superior electrochemical performance. The Na 0.70 Fe 0.15 Cu 0.15 Mn 0.70 O 2 (NFCM-0.70) cathode delivers a high initial energy density of 293.87 Wh kg −1 (based on the mass of the cathode) and presents the excellent capacity retention of 82.9% after 100 cycles at 0.2C. This work underscores the importance of rationally controlling intrinsic component ratios as a strategy for developing low-cost, high-performance layered oxide cathodes for SIBs.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Li Zhenfeng,Zhao Yifan,Shao Jianhang,Wang Zixu,Li Jinyang,He Peng,Zhang Shuye
Copper nanowires (CuNWs) present a promising low-cost alternative to indium tin oxide for next-generation flexible electronics. However, their widespread use is hindered by their natural tendency to oxidize and the difficulty of establishing effective interwire connections on thermally sensitive substrates. Here, we introduce durable, oxidation-resistant transparent conductive films (FTCFs) made from Cu@Ag core–shell nanowires, produced through a pulsed photonic sintering process. Combined multiphysics simulations and systematic experiments reveal that the innovation of this work lies in a synergistic photonic-sintering mechanism rather than in the separate use of Cu@AgNWs, transparent heating, or electromagnetic interference (EMI) shielding. During the short-pulse treatment, localized photothermal activation promotes nanowire junction welding, while transient softening of the PI surface enables partial nanowire embedding and interfacial anchoring. This coupled mechanism integrates Ag-shell-enabled oxidation resistance, low-resistance welded junctions, substrate-assisted mechanical stability, transparent EMI shielding, and rapid low-voltage electrothermal response in one Cu-based flexible transparent conductive film. This architecture simultaneously provides excellent electrical conductivity and strong interfacial adhesion without damaging the structure. As a result, these optimized FTCFs achieve a competitive sheet resistance of 16.9 Ω/sq at 81.6% transmittance and demonstrate remarkable stability under mechanical stress and environmental conditions. Showing versatile multifunctionality, the films exhibit effective X-band EMI shielding performance (up to 39 dB) and function as transparent heaters with rapid low-voltage electrothermal response, reaching a temperature increase of more than 70 ° C at 3 V and showing fast switching-induced temperature variation within the 1 s acquisition interval. This work offers a scalable, mechanism-based approach for producing high-performance Cu-based FTCFs, emphasizing their great potential in advanced high-frequency shielding and wearable thermal management.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Han Xiang,Lu Lin,Yu Li,Qisong Yi,Chaoran Jiang,Rui Chen,Yuanshuai Liu,Na Sai,Jinlu He,Fenghua Bai,Wenhao Luo
Selective hydrogenation of furfural (FFL) to furfuryl alcohol (FAL) represents a pivotal paradigm in sustainable biomass valorization. In this work, nanoscale Cu clusters were encapsulated in silicalite-1 (S-1) zeolite using in-situ synthesis, and further modified by a rare-earth element of La for regulating the catalyst microenvironment. The obtained La-Cu@S-1 can provide an enhanced performance in the FFL-to-FAL transformations, with 98.6% conversion of FFL and 99% selectivity of FAL at 110 °C, 20 bar H 2 , and 3 h. Besides, La-Cu@S-1 shows a good stability without apparent catalyst deactivation upon four consecutive runs. Extensive characterization research reveals that La addition could provide anchoring sites for Cu nanoclusters via an enhanced electronic interaction, thereby effectively suppressing metal leaching and agglomeration during the liquid-phase catalysis. Additionally, La addition could modulate the zeolite microenvironment of encapsulated Cu nanoparticles and notably stabilize the conventionally unstable Cu + species at a high proportion, even in a reductive H 2 atmosphere during catalysis, accounting for the enhanced activity and stability. This study showcases La modification as an efficient approach to rationally develop metal-zeolite combinations with enhanced performance, promoting potential utilization and development of rare-earth elements in the valorization of biomass and other renewable energy.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yiming Zhao,Jingyuan Zhang,Junmei Liu,Jiatong Han,Dan Xu,Jing Wang,Fengzhi Lyu,Lin Qin,Donghui Xu,Ge Chen,Guangyang Liu
Defect-engineered Cu–TCPP/ZIF-L nanosheet membrane: tannic acid coordinates with Cu 2+ to create defect sites, while ZIF-L serves as an interlayer spacer to suppress π–π stacking and restore transport. • The optimized membrane achieves 691.20 L·m -2 ·h -1 ·bar -1 , a 75.5× increase over pristine Cu–TCPP. • Efficient dye removal under static conditions: 97.77% (CV) and 97.87% (MG), suitable for agricultural water purification. • Adsorption–degradation self-cleaning via single-layer chemisorption/ion exchange and catalytic oxidation by O₂· - / 1 O₂; cucumber seedling tests confirm irrigation safety. Dye-laden wastewater from aquaculture and agricultural runoff poses serious environmental challenges, calling for membranes that can deliver both high water flux and efficient dye removal. However, MOF-based composite membranes often still face trade-offs between permeance and separation efficiency, and their practical performance is limited by fouling and insufficient self-regeneration. We hypothesize that defect engineering of Cu–TCPP via tannic-acid-mediated metal–phenolic network (MPN) disruption, together with ZIF-L nanosheet interlayer modulation, can create favorable transport pathways and strengthen adsorption/ion-exchange interactions while enabling ROS-driven self-cleaning. A defect-engineered Cu–TCPP/ZIF-L nanosheet-modified PVDF membrane was prepared using an MPN strategy with tannic acid, and its dye removal performance toward malachite green and crystal violet, together with the underlying mechanisms, was systematically investigated. The optimized membrane achieves a 75.5-fold increase in water permeance to 691.20 L/(m 2 ·h·bar) while maintaining high removal efficiencies of 97.87% for malachite green and 97.77% for crystal violet, and it exhibits self-cleaning behavior enabled by superoxide radicals and singlet oxygen. This work demonstrates an integrated Cu-TCPP–TA/ZIF-L/PVDF membrane design that combines MPN-mediated defect regulation with ZIF-L-assisted lamellar structure modulation for adsorption–degradation-based dye removal in agricultural water-related scenarios. Download: Download high-res image (170KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 12
·893
·
IF 4.3
Danyang Li,Can Liu,Shu Zhao,Fujie Li,Hao Li,Chao Wang,Xiu Song Zhao
Na-layered Li-containing Mn-based cathodes (NaxLiyMn1-yO2, NLMOs) with additional Na+storage ability resulting from the anionic redox reaction (ARR) hold great promise for sodium-ion batteries (NIBs). However, practical applications of NLMOs encounter challenges, such as migration of transition metal Mn, loss of lattice oxygen, and voltage decay during cycling. Here, we show that Cu plays an important role in enhancing the ARR via the reductive coupling mechanism (RCM). Results shows that a Cu2+/Fe3+modified NLMO sample delivers a Na+storage capacity as high as 174 mA h g−1at 0.2C, higher than that of a Zn2+/Fe3+modified NLMO sample (130 mA h g−1) and NLMO (154 mA h g−1). Both in situ and ex situ characterization results indicate that the obvious improvement in the electrochemical performance of the Cu2+/Fe3+modified NLMO is due to the additional overlaps between the Cu 3d and O 2p orbitals, which is beneficial for the RCM. As a result, the ARR is enhanced so as to increase the Na+storage capacity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Min Yang,Shuang Sheng,Ziyi Wan,Yaoyao Xu,Rui Qi,Xiaofeng Luo,Weiyu Pan,Kunshan Yang,Ziqing Zhang,Guowei Deng
Hydrogen evolution reaction (HER) is a key step in the production of hydrogen (H 2 ) by overall water splitting, which is of great significance for the storage and conversion of renewable energy. Nevertheless, the elevated excess potential and insufficient stability of catalysts constrain their industrial applicability. Due to the poor catalytic activity of NiWO 4 in alkaline solution, this study investigated the effect of IB metal (IB=Au, Ag, Cu) ion doping and its interaction with different concentrations of IB x /NiWO 4 ( X = 1,2,3,4 mmol) on catalytic activity to achieve stable H 2 in alkaline media. In 1.0 M KOH solution, the current density is 10 mA cm −2 , the Au 3 /NiWO 4 exhibits a low overpotential is 86.11 mV, the slope of Tafel is 115.16 mV dec −1 , and the overpotential of Ag 3 /NiWO 4 is 168.41 mV, with a Tafel slope of 64.32 mV dec −1 , the catalyst also showed long term stability for 150 h, the Au 3 /NiWO 4 NF‖Au 3 /NiWO 4 NF catalysts achieved a low voltage of 1.45 V at 10 mA cm −2 current density for 100 h. The synergistic interactions of bimetals present a novel approach for enhancing catalyst design and optimizing performance.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Qi Liang,Tao Liao,Liqin Zhu,Changxiang Liu,Qian Liu,Jianhua Xiong,Ruiping Deng,Xiaoning Liao
A novel nanocomposite consisting of core (Cu)-shell (Ag) nanoparticles encapsulated in carbon nanotubes (CTs) grown on a MOF-derived carbon framework was synthesized by in-situ pyrolyzing method. After further modification with multi-walled carbon nanotubes (MWCNTs), a hierarchical porous carbon network confined core (Cu)-shell (Ag) bimetal (Cu@Ag@CTs/MWCNTs) with excellent catalytic properties to isoproturon (ISO) and norfloxacin (NOR) was obtained. The electrochemical sensor based on the Cu@Ag@CTs/MWCNTs can simultaneously detect the ISO and NOR with excellent sensitivity, good selectivity and perfect stability as well as a separation of peak potential of 270 mV. The calibration curves for ISO and NOR achieved by the proposed sensor range from 80 nM to 18 μM and 7.0 nM to 1.7 μM with detection limits of 26 nM and 2.0 nM, respectively. Moreover, the sensor shows good recoveries in simultaneous detection of ISO and NOR in real sample analysis, highlighting its high feasibility in practical application.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Sun Xichen,Zhu Pengqi,Tang Liuyan,Wang Pengfei,Li Ningning,Wang Qing,Lou Yan-Ru,Zhang Yuezhou,Li Peng
To tackle elevated blood glucose, multidrug-resistant (MDR) bacterial infections, and persistent inflammation in diabetic wounds, we present a therapeutic strategy that employs a photoswitch-controlled catalytic cascade reaction, utilizing a photocatalytic material engineered through the synergistic regulation of nitrogen vacancies and single-atom embedding. Under visible light illumination, the N vacancy exist in g-C 3 N 4 (CN) significantly enhances photocatalytic glucose oxidation to regulate the hyperglycemia condition at diabetic wound sites, and the atomically dispersed Cu promotes the generation of •OH and •O 2 – to efficiently eliminate MDR bacteria ( > 99.9%). Under dark conditions, excess ROS are scavenged by Cu/CN, reducing inflammation of wounds and promoting polarization of M2 macrophages. Serum biochemical and vital organs histopathological analyses after 14 days of treatment confirm the biosafety profile of Cu/CN. This photoswitchable cascade reaction effectively treats MDR bacterial-infected diabetic wounds in male mice, highlighting its potential for antibiotic-free therapy with promising clinical translation applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Shuhong Liu,Zhongping Yao,Yanjing Liu,Jiankang Wang,Xiao Zhang,Ying Song,Wanqian Guo,Xiaohong Wu
Singlet oxygen ( 1 O 2 ) offers unique advantages for contaminant degradation owing to its high oxidative selectivity, long half-life, and pH-independent reactivity. However, the spin-forbidden transition between molecular oxygen (triplet state, 3 O 2 ) and 1 O 2 severely limits their interconversion under energy-free conditions. Herein, we innovatively prepared a nitrogen-doped carbon-coated copper-cobalt alloy catalyst (CuCo@NC) that hierarchically activated molecular oxygen into 1 O 2 . The optimized CuCo@NC600 demonstrated exceptional performance: achieving 96.79 %-98.91 % Norfloxacin (NOR) removal and ∼70 % mineralization within 40 min across a broad pH range of 3–11 under conditions of 1.0 g/L catalyst and 20 mg/L NOR. The catalyst exhibited remarkable versatility, degrading diverse organic pollutants (rhodamine B, tetracycline hydrochloride, etc.) with > 90 % efficiency and strong anti-interference capability against common ions and organic matter. No significant performance degradation was observed in both real wastewater and surface water systems. Radical quenching experiments confirmed 1 O 2 as the dominant reactive species generated through hierarchically activating O 2 by Cu-Co collaboration: molecular oxygen is initially activated at Cu sites, generating •O 2 – and •OH, which are then captured and converted to 1 O 2 at Co sites. The preserved catalytic stability (>70 % efficiency after 3 cycles) originated from the protective carbon matrix and self-compensating Cu + /Cu 2+ –Co 2+ /Co 3+ valence transitions. LC-MS-identified intermediates revealed three detoxification pathways. This work provided an energy-efficient and environmentally friendly strategy for 1 O 2 -dominated advanced oxidation processes, demonstrating significant potential for antibiotic-polluted water remediation.
✓ 已验证
DOI
高影响因子
MINERALS ENGINEERING
·
2026
·
IF 5
Yunzhen Hu,Kangjing Wu,Shuai Wang,Zhanfang Cao,Xin Ma,Hong Zhong
The flotation separation of chalcopyrite and galena remains challenging due to their similar surface properties. Here, we demonstrate that H 2 O 2 pretreatment passivates Cu sites (forming Cu–O) while activating Pb sites (forming Pb–O) on mineral surfaces, which transforms sodium 2-(dithiocarboxylato)ethyl acetate (DTCA) from non-selective into a galena-selective depressant. Micro-flotation experiments indicate that with H 2 O 2 oxidation duration of 30 min, pH of 10, and DTCA dosage of 100 mg/g, galena recovery can be reduced to below 5% while maintaining chalcopyrite recovery above 90%. Following oxidation, the adsorption amount of chalcopyrite decreased from 96.54 to 7 mg/g, while that of galena increased from 101.32 to 102.45 mg/g. Multiscale characterizations (FTIR, XPS, ToF-SIMS) indicate that DTCA adsorbs onto the surfaces of chalcopyrite and galena, respectively, via chelation between S–Cu–S and S–Pb–S bonds. Density functional theory (DFT) calculations confirm that oxidation enhanced the adsorption strength of DTCA on the surface of galena, with the adsorption energy shifting from −2.571 to −2.645 eV. Conversely, adsorption strength decreased significantly after oxidation of chalcopyrite, with the adsorption energy shifting from −2.470 to −1.588 eV. Closed-circuit tests on industrial concentrates yielded copper recovery and grade reached 93.13% and 27.43%, respectively, while lead achieved 96.33% recovery and 43.21% grade, with a separation index (SI) of 2.55, surpassing that achieved by the toxic potassium dichromate(K 2 Cr 2 O 7 ) method. This study proposes a Cr (VI)-free flotation strategy for efficient Cu–Pb separation, offering a promising alternative to conventional environmentally hazardous methods.
✓ 已验证
产品关联
DOI
高影响因子
Nature Energy
·
2026
·
IF 60.1
Zhang Shaochen,Bi Enbing,Lei Borui,Tian Liuwen,Miao Xiaohe,Lian Chongyan,Wang Xiaonan,Zhang Xu,Jin Donger,Zhou Jingjing,Tian Yuan,Fan Wei,Chu Shenglong,Liu Qingqing,Gui Yang,Guo Tie,Wang Rui,Yang Deren,Xue Jingjing
Perovskite/Cu(In,Ga)Se 2 (CIGS) tandem solar cells hold particular promise for flexible and lightweight applications, yet their efficiency still lags behind other perovskite-based tandem architectures. To achieve optimal spectral matching with the CIGS bottom cell, the perovskite top cell requires a wide bandgap, obtainable with a mixed-halide composition with high bromide content. However, perovskite films made with high bromide content suffer from inhomogeneous halide distribution, especially for scalable film fabrication method. Here we use 2-pyrrolidinone as the coordinating solvent to suppress the crystallization of the halide intermediates, maintaining a homogeneous halide distribution during ambient blade-coating of the perovskite film. We demonstrate a flexible monolithic two-terminal perovskite/CIGS tandem cell with a power conversion efficiency of 27.3%, with minimal efficiency loss over 500 h of operation.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.5
Wensong Wang,Ying Tian,Xiuwen Cao,Xiang Liu,Shizhe Cao,Deheng Chen,Weizi Jiang,Mingtao Li,Weiwei Lin,Xun Sun,Shenjie Li,Yanyan Chen
The urea oxidation reaction (UOR), with its low theoretical potential, can replace the oxygen evolution reaction (OER) at the anode in water electrolysis, thereby reducing the thermodynamic barrier of electrochemical water splitting. However, in practical UOR electrocatalysts, the adsorption competition between urea and OH⁻ constitutes a kinetic bottleneck. Conventional catalysts lack dynamic regulation means, which ultimately leads to the occurrence of competitive adsorption. In this study, we constructed a CuxS/FeS/NF heterojunction electrocatalyst via hydrothermal methods, achieving highly efficient catalysis for UOR-assisted overall water splitting. The heterojunction features an open and disordered hierarchical porous structure, significantly increasing the specific surface area and active site density (with a double-layer capacitance of 8.33 mF cm -2 ). More importantly, the reversible Cu + /Cu 2+ valence cycling on the heterojunction surface dynamically modulates urea adsorption sites, addressing the issue of OH -occupying active centers and accelerating reaction kinetics (Tafel slope as low as 26.28 mV dec -1 ). In-situ Raman tests confirm that Cu 2+ forms strong coordination with -NH₂ via empty orbitals, while Cu + weakens the adsorption of OH⁻ through high electron density; the two species synergistically accelerate the reaction kinetics. Electrochemical tests reveal that in the UOR||HER system, CuxS/FeS/NF only requires a potential of 1.35 V vs. RHE to achieve a current density of 10 mA cm -2 , while for the HER, it needs merely 78 mV to reach the same current density. When applied to UOR-assisted overall water splitting in a 1 M KOH + 0.33 M urea electrolyte, the system requires only 1.440 V vs. RHE cell voltage to deliver a current density of 50 mA cm -2 and maintains stable operation for 60 hours, with a urea degradation rate of 66.4% after 20 hours. This work, through the dynamic regulation mechanism of copper valence cycling, provides a novel approach for designing UOR catalysts with both high activity and stability, holding significant application potential in low-energy hydrogen production and wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）